/Engine/Source/Editor/BlueprintGraph/Public/BlueprintNodeSpawner.h
Retrieves a cached template for the node that this is set to spawn. Will instantiate a new template if one didn't previously exist. If the template-node is not compatible with any of our cachedUEdGraphouters, then we use TargetGraph as a model to create one that will work.
Should return a new/cached template-node (but could be null, or some pre-existing node... depends on the sub-class'sInvoke()method).
[UEdGraphNode](API\Runtime\Engine\EdGraph\UEdGraphNode) * GetTemplateNode ( [UEdGraph](API\Runtime\Engine\EdGraph\UEdGraph) * TargetGraph, [FBindingSet](API\Editor\BlueprintGraph\IBlueprintNodeBinder\FBindingSet) const & Bindings ) const